CVE-2020-15562

Name: CVE-2020-15562
Creator: NVD / NIST
Published: 2020-07-06T12:15:10.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 2.07%

Last modified Jun 17, 2026

CVE-2020-15562 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An issue was discovered in Roundcube Webmail before 1.2.11, 1.3.x before 1.3.14, and 1.4.x before 1.4.7. It allows XSS via a crafted HTML e-mail message, as demonstrated by a JavaScript payload in the xmlns (aka XML namespace) attribute of a HEAD element when an SVG element exists.. EPSS estimates a 2.07% chance of exploitation in the next 30 days.

Description

An issue was discovered in Roundcube Webmail before 1.2.11, 1.3.x before 1.3.14, and 1.4.x before 1.4.7. It allows XSS via a crafted HTML e-mail message, as demonstrated by a JavaScript payload in the xmlns (aka XML namespace) attribute of a HEAD element when an SVG element exists.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

2.07%

79.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Roundcube	Webmail	< 1.2.11
Roundcube	Webmail	>= 1.3.0, < 1.3.14
Roundcube	Webmail	>= 1.4.0, < 1.4.7
Debian	Debian Linux	10.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.htmlBroken Link
https://github.com/roundcube/roundcubemail/commit/3e8832d029b035e3fcfb4c75839567a9580b4f82Patch, Third Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.2.11Release Notes, Third Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.3.14Release Notes, Third Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.4.7Release Notes, Third Party Advisory
https://www.debian.org/security/2020/dsa-4720Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.htmlBroken Link
https://github.com/roundcube/roundcubemail/commit/3e8832d029b035e3fcfb4c75839567a9580b4f82Patch, Third Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.2.11Release Notes, Third Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.3.14Release Notes, Third Party Advisory
https://github.com/roundcube/roundcubemail/releases/tag/1.4.7Release Notes, Third Party Advisory
https://www.debian.org/security/2020/dsa-4720Third Party Advisory

Timeline

Published: Jul 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15562?

How severe is CVE-2020-15562?

CVE-2020-15562 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 2.07% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15562?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15562?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST